Brochantite
Brochantite is a hydrous copper sulphate and can be blackish green, emerald green or blue green in colour. Named after the French Geologist A. J. M. Brochant de Villiers in 1824. It forms in the oxidisation zones of copper, particularly in arid areas.
Brochantite can be used to strengthen the aura, and it aligns all chakras and stimulates in particular the Heart and Base chakra. It is a protective and cleansing stone, and when used in meditation it can give us insight into unforeseen dangers.